The 20 Watt G20 INFINIUM provides two preamp tube stages for Clean and two dedicated tube stages for Overdrive to cover a wide sonic territory. The G20 features an integrated high-definition Reverb and an extremely versatile MORPH EQ for seamlessly sweeping vintage U.S. and British-style tone. The push-pull Class-A tube amp head features a 2 x ECC83 front-end and 2 x EL34 power stage for a warm distortion and vintage feel. The INFINIUM Tube Life Multiplier Technology controls your output tubes' status and can even extend the lifespan by up to 20 times. Hand-built 20-Watt Class-A amplifier driven by 2 x ECC83 and 2 x EL34 tubes, Revolutionary INFINIUM Tube Life Multiplier technology: Extends the life of your amplifier’s expensive power tubes up to 20 times. Provides incredible reliability and consistent tone over the complete lifespan of your tubes. No need for expensive matched tube sets Allows you to mix and match any combination of compatible tube types and brands. Monitors performance of the power tubes continuously and displays defective tubes to allow for easy replacement. Revolutionary MORPH EQ to seamlessly sweep between USA and British EQ-style tone. Amazing classic push-pull power amp design for vintage tonal character. High-definition reverb with dedicated Reverb control, Heavy-duty footswitch for Channel / Reverb selection included, Speaker-emulated output with 1 x 12 or 4 x 12 voicing option. Impedance switch (4, 8 and 16 Ohms) to match virtually any speaker cabinet, Effects loop with effects level switch, Modern-style look and feel.